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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Start of the reproductive tract for the female. located outside of the body






2. To remove/separate testicles from animal's body before animal reaches puberty






3. Help to signal hormone levels which we need both in the brain right next to each other.






4. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






5. 16-20 hours






6. Actual heat cycle (period)






7. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






8. Produce testosterone. located between the seminiferous tubules






9. (LH) causes female's egg to break (her period)






10. Duct through penis that carries sperm and urine






11. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






12. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






13. 26 hours after estrus begins






14. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






15. 2 month growth cycle. stored in the epididymis of the bull






16. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






17. 265-285 days






18. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






19. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






20. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






21. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






22. Failure to have both testis (gonads) descend






23. To remove/separate testicles from animal's body before animal reaches puberty






24. Days which have increasing daylight hours

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25. Important 'landmark' during palpation






26. Animals which have only one estrous cycle (ex: dog - fox)






27. 30 hours after estrus begins






28. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






29. ~305 days (altough often longer due to breeding difficulties)






30. Look for infection - split - and rupture of the penis






31. Prevent the cow from getting an infection from the calve






32. 24 hours before end of estrus cycle






33. Front feet and head first. (except for hogs and dogs)






34. Why Dairy calves are fed powdered milk.






35. Scar tissue plugs up chambers of udder






36. What about the sperm for a bull which has been castrated but still has testicles?






37. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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38. Check feet and legs - look for masculine traits in build such as crest and muscling






39. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






40. Animals which have only one estrous cycle (ex: dog - fox)






41. Implies the amount of estrogen production






42. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






43. Luteolysis happens because of the ____________ hormone






44. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






45. 16-20 hours






46. Urinary calculi.






47. Sperm is produced here






48. Birthing process (termination of gestation)






49. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






50. 19-23 (21) days